The TROPICS WG is a joint group between CLIVAR Climate Dynamics Panel, CLIVAR Pacific Panel, and WCRP CFMIP, with an aim to better understand the mechanisms behind the formation of tropical SST warming patterns across the past, present, and future. We would like to invite you to our first in-person WG workshop, scheduled for September 17-19, 2024 at the Max Planck Institute for Meteorology in Hamburg. The primary objective is to facilitate the exchange of ideas and collaborative brainstorming. We hope this will lead to the initiation of several collaborative projects. The workshop will be organized around three key themes:
(1) Tropical feedbacks in models and observations,
(2) Role of persistent model biases and sensitivity to model resolution,
(3) Remote forcings and teleconnections.
The workshop will involve around 30 people, so expect lots of discussion. The goal is to foster fruitful discussions, so there is no need for a polished conference-style talk. You can choose any presentation format, from a few pages of slides on ongoing work to a more comprehensive talk on a recently published work. Regardless of the format, kindly conclude your presentation with open questions/knowledge gaps/suggestions for future work to stimulate free discussion. Each speaker will be tentatively allocated 20 min for presentation and 20 min for discussion. We will then conclude each day with a synthesis discussion on the proposed future plans on the theme of the day.
The Workshop is hosted by the Max Planck Institute for Meteorology in Hamburg, Germany. The workshop room 022/023 is on the ground floor.
WiFi: Eduroam
Each day will be devoted to a different theme: (1) Tropical feedbacks in models and observations on Day 1, (2) Role of persistent model biases and sensitivity to model resolution on Day 2, (3) Remote forcings and teleconnections on Day 3. Every presenter is assigned to the time slot according their declaration of the theme.
| Day 1 (Sep. 17) | Activity / presentation | Speaker | Affiliation |
|---|---|---|---|
| 8:30 | Registration | ||
| Chairs: Olonscheck, Dirk & Moreno-Chamarro, Eduardo | |||
| 8:45-9:00 | Welcome and overview talk | Kang, Sarah & Watanabe, Masahiro | Max Planck Institute for Meteorology & University of Tokyo |
| 9:00-9:15 | Tropical circulation variability and trends: coordinated activities within WCRP EPESC LHA | Dittus, Andrea | University of Reading |
| 9:15-9:55 | Current and future climate trends in the tropical Pacific: from ocean cooling to an El Niño-like state | Federov, Alexey | Yale University |
| 9:55-10:35 | Air-sea feedbacks and atmospheric heat transport strongly damp natural variability in Indo-Pacific Warm Pool surface temperatures | Proistosescu, Cristi | University of Illinois |
| 10:35-11:00 | Coffee break | ||
| 11:00-11:40 | Role of the Bjerknes feedback in the projected warming pattern | Lengaigne, Matthieu | IRD UMR MARBEC |
| 11:40-12:20 | Mechanisms of Tropical Pacific decadal variability and tropical Pacific Trends, and role of Atlantic influences | Capotondi, Antonietta | NOAA, Physical Sciences Laboratory |
| 12:20-13:30 | Lunch | ||
| Chairs: Hwang, Yen-Ting & McGregor, Shayne | |||
13:30-14:10 | Is there a 'hydrological constraint' on tropical circulation changes? | Williams, Andrew | GFDL |
| 14:10-14:50 | A simple model of the coupled processes associated with the Tropical Pattern effect | Burls, Natalie | George Mason University |
| 14:50-15:10 | Coffee break | ||
| 15:10-15:50 | Do lower stratospheric/TTL temperature trends affect the Walker Cell? | Held, Isaac | GFDL |
| 15:50-16:05 | Tropical thermocline helps power Pacific equatorial upwelling | Gutierrez-Brizuela, Noel | Columbia University |
| 16:05-16:20 | The Brewer-Dobson circulation affects temperature change patterns in the tropics | Günther, Moritz | Max Planck Institute for Meteorology |
| 16:20-17:30 | Synthesis discussion | all | |
| 17:30-open end | Icebreaker |
| |
| Day 2 (Sep. 18) | Activity / presentation | Speaker | Affiliation |
|---|---|---|---|
| 8:30-9:00 | Arrival | ||
| Chairs: Toda, Masaki & Günther, Moritz | |||
| 9:00-9:40 | Anthropogenic forcing of recent Pacific climate change amplified by tropical-extratropical interactions | DiNezio, Pedro | University of Colorado |
| 9:40-10:20 | Impacts and Mechanisms | Collins, Mat | University of Exeter |
| 10:20-10:50 | Coffee break | ||
| 10:50-11:30 | Biases in tropical ocean circulation of possible relevance to the tropical SST warming pattern | Karnauskas, Kristopher | University of Colorado |
| 11:30-12:00 | Ocean mixing and the thermostat mechanism | Moreno-Chamarro, Eduardo | Max Planck Institute for Meteorology |
| 12:00-13:30 | Lunch | ||
| Chairs: Collins, Mat & Stuecker, Malte | |||
| 13:30-14:10 | Effect of model biases on the projected warming pattern | Vialard, Jerôme | Institute of Research for Development |
| 14:10-14:50 | Tropical mean-state biases, historical SST trends, and their dependence on resolution | Jnglin Wills, Robert | ETH Zurich |
| 14:50-15:10 | Coffee break | ||
| 15:10-15:50 | Implications of a pervasive climate model bias for low-cloud feedback | Ceppi, Paulo | Imperial College London |
| 15:50-16:05 | Higher resolution does not consistently improve equatorial Pacific sea surface temperature pattern across climate models | Dhame, Shreya | Max Planck Institute for Meteorology |
| 16:05-17:15 | Synthesis discussion | all |
|
| 18:00-open end | Workshop dinner, followed by discussions | ||
| Day 3 (Sep. 19) | Activity / presentation | Speaker | Affiliation |
|---|---|---|---|
| 8:30-9:00 | Arrival | ||
| Chairs: Jalihal, Chetankumar & Putrasahan, Dian | |||
| 9:00-9:40 | The perplexing warming trend over the Pacific Ocean: the role of two-way teleconnections between the Southern Ocean and the tropical Pacific | Battisti, David S. | University of Washington |
| 9:40-10:20 | Teleconnections from the 2023/24 El Niño: Impact of long-term SST trends | Deser, Clara | NCAR |
| 10:20-10:50 | Coffee break | ||
| 10:50-11:30 | Toward Predicting the Time-Evolving Tropical Pacific SST Pattern under Anthropogenic Climate Change | Hwang, Yen-Ting | National Taiwan University |
| 11:30-12:00 | Evolution of equatorial Pacific SST response to tropical and extratropical forcing | Olonscheck, Dirk | Max Planck Institute for Meteorology |
| 12:00-13:30 | Lunch (Group photo) | ||
| Chairs: Kang, Sarah & Watanabe, Masahiro | |||
| 13:30-14:00 | Walker circulation strengthening driven by sea surface temperature changes outside the tropics | Toda, Masaki | Max Planck Institute for Meteorology |
| 14:00-14:40 | The role of inter-basin interactions on the Pacific warming pattern | McGregor, Shayne | Monash University |
| 14:40-15:00 | Coffee break | ||
| 15:00-15:40 | Impacts of local drivers vs. remote coupled feedback processes on climate change patterns - an update | Stuecker, Malte | University of Hawaii |
| 15:40-16:20 | Bridging energy and SST views: Coupled ocean-atmosphere pathways | Xie, Shang-Ping | Scripps Institution of Oceanography, University of California San Diego |
| 16:20-16:35 | Role of anthropogenic aerosols in Pacific Decadal Variability since the 1980s | Dittus, Andrea | University of Reading |
| 16:35-17:30 | Synthesis and final discussion | all | |
| 17:30 | End | ||
| Day 4 (Sep. 20) | |||
| 09:00-13:00 | Closed Core Group Meeting (room 002) followed by a light lunch | ||
Considering the demand for accommodation in Hamburg in September, we recommend booking a hotel as soon as possible upon confirming your attendance. Below please find a few suggestions frequently used by visitors to MPI.
Hotel recommendations
1) YoHo - the young hotel (10 min. walk to MPI-M) Moorkamp 5, 20357 Hamburg Fon +49 (0) 40 - 28 41 91-0 E-Mail: yoho@yoho-hamburg.de www.yoho-hamburg.de Code: TROPICS Workshop (valid until 17 June)
2) Ibis Hotel Hamburg City (19 min. by Underground U1/U2) Amsinckstr. 3, 20097 Hamburg Fon +49 (0) 40- 30 99 86-0 Email: h8740-re@accor.com www.ibis.com Code: TROPICS Workshop (valid until 23 July) 3) Premier Inn City Centrum (15 min. by Underground U1/U2) Willy-Brandt-Straße 21, 20457 Hamburg Fon +49 (0) 40 3039 379 0 E-Mail: Hamburg.City@premierinn.com www.premierinn.com Ask for the BUND-Rate! 4) NH Hamburg Mitte (10 min. walk to MPI-M) Schäferkampsallee 49, 20357 Hamburg Fon +49 (0) 40 44 11 50 E-Mail: nhhamburgmitte@nh-hotels.com www.nh-hotels.com Ask for the BUND-Rate!
(Due to a trade fair in Hamburg, “Premier Inn City Centrum” and “NH Hamburg Mitte” cannot guarantee the more favourable BUND-Rate).
Information about getting to Hamburg can be found here.
Transport passes for the week
Tickets for the Hamburg transport network (HVV) can be bought online, in the HVV-App or at the ticket machines found at almost every station.
The network is segmented into rings from A to F. If you don’t plan to travel far outside the city, purchasing regular tickets for zones A and B will certainly suffice.
For the duration of the workshop, a weekly 24/7 ticket might be your cheapest option to travel around Hamburg.
Organizing committee: Sarah Kang, Masahiro Watanabe, Mat Collins, Yen-Ting Hwang, Shayne McGregor, and Malte Stuecker
Should you have any questions, please contact the local organizing committee:
- Dirk Olonscheck <dirk.olonscheck@mpimet.mpg.de>
- Eduardo Moreno-Chamarro <eduardo.chamarro@mpimet.mpg.de>
- Elke Lord <elke.lord@mpimet.mpg.de>